Pfizer's high profile anti-smoking drug Champix is facing patent uncertainty in India as Dr Reddy's has filed a post grant opposition against selling the drug in India.
Australian clinical research company Novotech entered into a strategic partnership pact with ETI Klinical Pvt Ltd of India.
Ending tax sops for overseas operations could hit American companies' investments in pharma, contract research and manufacturing in India.
Using both oseltamivir and Zanamivir drugs cuts resistance to just 2 per cent.
The Indian Government currently sells oseltamivir only through hospitals and health centres.